Event risk before this expiration:CPI release Wed, Oct 14 · FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ put-side pain■ call-side painTotal payout option writers would owe at each settle price (both sides, all open interest, ×100 shares) — low settles hurt put writers, high settles hurt call writers. The minimum — 350 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)V open contracts per strike for Fri, Dec 18.
Open-interest change — building vs unwinding
Needs two observed snapshot days for this expiration — the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Dec 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 18
— call IV— put IVATM ≈ 22.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 18
Net dealer gamma per strike, in dollars per 1% move, assuming the standard convention (dealers long calls, short puts) — an assumption, not an observation. Above the amber flip level hedging tends to dampen moves; below it, to amplify them.
Greeks by strike · Fri, Dec 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.84
-0.07
355
0.0060
0.41
-0.07
-0.17
0.81
-0.08
360
0.0068
0.46
-0.08
-0.20
0.77
-0.09
365
0.0077
0.51
-0.09
-0.23
0.73
-0.09
370
0.0085
0.55
-0.10
-0.27
0.69
-0.10
375
0.0093
0.59
-0.10
-0.32
0.64
-0.10
380
0.0100
0.62
-0.11
-0.37
0.59
-0.10
385
0.0105
0.65
-0.11
-0.42
0.54
-0.11
390
0.0108
0.66
-0.11
-0.47
0.48
-0.11
395
0.0110
0.66
-0.11
-0.53
0.43
-0.10
400
0.0109
0.65
-0.11
-0.59
0.37
-0.10
405
0.0106
0.63
-0.10
-0.64
0.32
-0.09
410
0.0102
0.60
-0.10
-0.70
0.28
-0.09
415
0.0095
0.56
-0.09
-0.75
0.23
-0.08
420
0.0087
0.51
-0.08
-0.79
0.19
-0.07
425
0.0079
0.46
-0.07
-0.83
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 52 are in the CSV. Δ per $1 of underlying · Θ per day · vega per IV point.
Stacked — layer the expirations
Call open interest per strike, stacked across the checked expirations — each color is one expiry. Strikes are pruned to the liquid center of each chain.
Max pain is arithmetic, not prophecy: the settle price that would minimize what option writers pay out at expiration, computed from open interest alone. Prices sometimes gravitate toward heavy strikes into expiry — dealer hedging is a real flow — but the evidence that max pain predicts settlement better than chance is mixed, and we are not going to pretend otherwise. Use it as a map of where positioning is stacked, next to the fundamentals and the earnings calendar, not as a target.
Data: Cboe delayed public feed (~15 minutes), refreshed here about every 15 minutes. Open interest itself updates once daily, before the open. Educational information, not investment advice.